SOUTH WEST AFRICA 1923 Transvaal 6d black and red-brown Postage Due variety, SGD2bSouth West Africa 1923 Transvaal 6d black and red brown Postage Due, setting I overprint (14mm space, with hyphen), horizontal pair, left stamp variety "Afrika without stop" (R6 1), SGD2b. A fine and fresh mint pair with large part original gum. A rare Postage Due variety with a maximum of only 140 possible. The Stanley Gibbons catalogue value is 275+. At the beginning of the campaign in the conquest and occupation of German South West Africa,